S
M
T
W
T
F
S
26
86°
66°
27
83°
65°
28
80°
62°
29
78°
59°
30
78°
65°
31
79°
63°
1
81°
65°
2
79°
65°
3
85°
66°
4
84°
64°
5
81°
62°
6
80°
63°
7
85°
65°
8
86°
64°
9
84°
65°
10
84°
63°
11
80°
59°
12
83°
62°
13
85°
64°
14
81°
57°
15
77°
56°
16
77°
56°
17
80°
62°
18
78°
62°
19
78°
61°
20
79°
62°
21
81°
62°
22
78°
60°
23
78°
62°
24
83°
54°
25
81°
60°
26
84°
60°
27
85°
59°
28
86°
60°
29
78°
54°
30
76°
55°
31
78°
60°
1
82°
60°
2
77°
59°
3
83°
59°
4
82°
51°
5
77°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Caldwell
Caldwell's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 51° and 66°. The average high for August is 81° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Caldwell. See also: September | October | November.
